Question

On a chilly day of -8oC you take a child out sledding. At one point, they...

On a chilly day of -8oC you take a child out sledding. At one point, they sit atop a sled and their and the sled combined mass is 25kg. You pull them on the sled at a constant speed of 1 m/s for 1 km on the snow with a coefficient of friction of 0.2.

a) How much work did you do to pull them? (ignore the work you did to pull yourself)

b) Say your body temp is 37oC, and that your 1.5 m2 of surface area has an emissivity of 0.7. In the time you pulled them, how much heat did you lose to the environment?

c) How much food energy would you need to maintain your body temp?

If you could show your work, it would really help. Thank you so much!

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
You are an athlete, but you prefer running, and frequently run 5-7 miles a day. You...
You are an athlete, but you prefer running, and frequently run 5-7 miles a day. You have been asked to house sit for a couple of months during the COVID 19 isolation, in a cabin up by Mt. Hood. Since your classes are all on-line and the Wi-Fi in this house is more than adequate, you decide on a change of scenery. The temperatures are much colder than in Portland, but you don’t mind and go out for your first...
You have developed a great work relationship and social relationship with Linda. You go out to...
You have developed a great work relationship and social relationship with Linda. You go out to dinner together after work and enjoy the social interactions outside of work. You consider Linda to be your mentor. She has shared with you in confidence that she is going through a divorce and has experienced recent back problems. Because of the social interactions, you feel you know Linda fairly well. Overtime, you notice some changes with her at work. She has called off...
pretend you are the Chief Financial Officer (CFO) of a manufacturing company. One day, a college...
pretend you are the Chief Financial Officer (CFO) of a manufacturing company. One day, a college accounting student contacts you and requests an interview. The student says that his Managerial Accounting class is studying budgets. One of their assignments requires them to interview a financial officer about the budgeting process. Of course you agree to the interview! The accounting student comes into your office with a prepared list of questions. As the CFO, how would you respond to each of...
Show work. 1. Suppose that you and a friend are playing cards and you decide to...
Show work. 1. Suppose that you and a friend are playing cards and you decide to make a friendly wager. The bet is that you will draw two cards with replacement from a standard deck of 52 cards. If both cards are hearts, you win $25. Otherwise, you have to pay your friend $2. (a) Find the probability distribution for the winning of your bet, say X. Hint: let x be your winning and it can take on possible values...
For this Discussion, review the client in the case study within the Learning Resources. Consider symptoms...
For this Discussion, review the client in the case study within the Learning Resources. Consider symptoms or signs presented by the client for a diagnosis. Think about how you, as a future professional in the field, might justify your rationale for diagnosis. Consider what other information you may need for diagnosis on the basis of the DSM diagnostic criteria. FEMALE SPEAKER: Well, I just keep thinking what if something happens? I mean I've always had trouble concentrating. But this time,...
Read the following three situations. Describe what you would do in EACH situation. Integrate the elements...
Read the following three situations. Describe what you would do in EACH situation. Integrate the elements of reasoning and intellectual standards in your writing to show an understanding of the material behind your personal example Your essay should be 500-750 words in length and include the use of at least two (2) elements of reasoning and two (2) intellectual standards for EACH of the three (3) scenarios you will be discussing. Do not worry about your answers being right or...
Hello, I need a summary of this article. Thanks Creating a New Mission Statement By Tara...
Hello, I need a summary of this article. Thanks Creating a New Mission Statement By Tara Parker-Pope January 5, 2015 4:38 pm January 5, 2015 4:38 pm Forget the New Year’s resolution. This year, try creating a personal mission statement instead. While it is common for businesses to define goals and values with mission statements, most people never take the time to identify their individual senses of purpose. Most focus on single acts of self-improvement — exercising more, eating more...
ch 6 1: It is generally a good idea to gain an understanding of the "size"...
ch 6 1: It is generally a good idea to gain an understanding of the "size" of units. Consider the objects and calculate the kinetic energy of each one. A ladybug weighing 37.3 mg flies by your head at 3.83 km/h . ×10 J A 7.15 kg bowling ball slides (not rolls) down an alley at 17.5 km/h . J A car weighing 1260 kg moves at a speed of 49.5 km/h. 5: The graph shows the ?-directed force ??...
As you saw from the lab PowerPoint slides last week, you will be doing a research...
As you saw from the lab PowerPoint slides last week, you will be doing a research study looking at ‘Aggression Priming” for your first paper. For this week’s discussion, I want you to discuss with your group what you think this study is about. What is the hypothesis? What theory does it come from? What do you predict will happen (do you expect something different than the hypothesis in the researcher instructions? If so, what and why?)? Do you think...
Team 5 answer the questions What are 4 key things you learned about the topic from...
Team 5 answer the questions What are 4 key things you learned about the topic from reading their paper? How does the topic relate to you and your current or past job? Critique the paper in terms of the organization and quality. Incentive Systems             In this paper, we will focus primarily on financial rewards that companies use to attract, retain and motivate the brightest and most talented candidates in the labor market. By providing a reward system that...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT